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13P/Olbers

Orbital period : 68.50 years

NASA/JPL elements
IAU/MPC elements


On 2024 Jun 24 21h53 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)7.0
Aperture radius used for m12.5 '
Nuclear magnitude (m2)10.3
Aperture radius used for m26 "
Coma diameter5.2 '
Coma condensation degree (DC)6
Tail length0.33 °
Tail position angle (PA)70 °
Afrho11210 cm
Afrho error360 cm
r (dist/Sun) 1.179 AU
d (dist/Earth) 1.964 AU
Instrumental configurationConfig1
InstrumentDobson 407mm F/D 4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
Instrument focale/diameter4.29
Filter(s)None
CameraSONY alpha7S
SensorDC
Sensor size36*24 mm2
Sensor pixels number4240*2832
Sensor temperature20 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time69.1 s
Exposure details57x0.5+22x0.8+23x1.0s
Sky transparency (naked eye max mag)5
Seeing2
Moon phase10 °
Moon elongation170 °
Air mass4.1
LocationCrespières
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning, flat, alignement, alignement comète, somme, retrait gradient
Remarks or commentsmagnitudes sur 49.1s en RAW, et Afrho sur couche R
Observation submission date2024 Jun 30 00h14m40s

(Record n° 28568)

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